CHART: Tracking Retirements From Congress

The number of House Republicans declining to run for re-election has hit a record level in 2018, as 36 GOP members have said they are leaving: 21 are retiring from public office, while 15 are seeking another position. That includes six Republicans from districts that Hillary Clinton won in 2016. A total of nine committee chairmen also aren't seeking re-election.

House Democrats are facing 17 retirements, including four seats they will have to defend in districts President Trump carried.

Just three members of the Senate have announced their retirements, all Republicans.

See who is retiring and how the political winds blow in their districts below: